package xyz.luhui1hao.sell.controller;

import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import xyz.luhui1hao.sell.exception.SellException;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import static xyz.luhui1hao.sell.enums.ResultEnum.WECHAT_MP_ERROR;

/**
 * @ClassName WechatController
 * @Description TODO
 * @Author luhui1hao
 * @Date 2018/9/6 上午10:53
 * @Version 1.0
 */
@Controller
@RequestMapping("/wechat")
@Slf4j
public class WechatController {

    @Autowired
    private WxMpService wxMpService;

    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl) throws UnsupportedEncodingException {
        //1.配置
        //2.调用方法
        String url = "http://www.luhui1hao.xyz:8090/sell/wechat/userInfo";
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAuth2Scope.SNSAPI_USERINFO, URLEncoder.encode(returnUrl, "utf-8"));

        return "redirect:" + redirectUrl;
    }

    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,
                           @RequestParam("state") String returnUrl) {

        WxMpOAuth2AccessToken wxMpOAuth2AccessToken;

        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("【微信网页授权】e = {}", e);
            throw new SellException(WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }

        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:" + returnUrl + "?openid=" + openId;
    }
}
